Page 139 - Foton Workshop Manual - Auman EST-M
P. 139

Diagnosis - Diagnosis-fault diagnosis of electronic and electrical parts   DI - 85

              Check if the result is ok?                                                                          IN
              Yes>go to Step 8.

              NO>replace the pre-heater                                                                           DI
              8. Check the intake manifold pressure sensor and its relevant circuit.

              a. Check the inlet manifold pressure sensor and its relevant circuit. (refer to “Chapter DI Diagnosis-Diagnosis   EG
              of Engine Electric Control Fault-Fault of inlet manifold pressure/temperature sensor”)
              Check if the result is ok?                                                                          TR
              Yes>go to Step 9.
              No>check and repair relevant fault or replace the inlet manifold pressure sensor or its relevant harness.   AX

              9. Check the atmospheric pressure sensor and its relevant circuit.
              a.  Check  the  barometric  pressure  sensor  and  its  relevant  circuit.  (refer  to  Chapter  DI  diagnosis-  engine   FR
              electronic control fault diagnosis–barometric pressure sensor failure)
              Check if the result is ok?                                                                          ST

              Yes>go to Step 10.
              No>check and repair relevant fault or replace the atmospheric pressure sensor or its relevant harness.     BR
              10. Check the injector and circuit

              a. Check the injector (refer to Chapter DI diagnosis- engine electronic control fault diagnosis–injector circuit   BW
              failure)
              Check if the result is ok?                                                                          EL
              Yes>go to Step 11.

              NO> check and repair relevant failure or replace the injector or harness.
              11. Replace and check ECM

              a. Replace ECM.
              b. Check if the failure is eliminated.





















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